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Running HR and Power and Zones Accuracy

Hi!

I've been using my 955 for about 2 months with HRM PRO. I have a recorded 171 LTHR and a 296* TR and are used to determine my zones.

I recently run a 10km and noticed that the zones are all Z5

Are my zones configured wrongly or are my recorded LTHR and TR technically inaccurate to my current fitness level?

I'd like to do a proper Z2 training so having the zones line up properly would be very helpful. Any ideas on how can I fix this zoning concern?

*296 TR is what my watch currently says to me. I'm not sure if this changed after the 10km run. Is there a way to get my historical TP?

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0 Miky over 2 years ago

Which was the effort for that 10km run? Hard or easy?

0 james over 2 years ago in reply to Miky

I would say it was hard but still manageable.

0 linsguilherme over 2 years ago

Hi.

I think it’s something strange with the zones at all.

To me, it seems that the zones ranges are too short. I compared my current zones with my zones when I used the FR945.
I always used it as %LTHR.

My perception is that the zones on 945 were more realistic.

I don’t fell I am in that bad shape as my zones on FR955 seems.

945 zones
955 zones

0 james over 2 years ago in reply to linsguilherme

Hi! Are those HR zones taken from same baseline (ie LTHR)? I noticed that 955 assigns different zone % depending on whether you base it on Max HR, HRR, or LTHR.

0 linsguilherme over 2 years ago in reply to james

linsguilherme said:
I always used it as %LTHR.

Yes.

0 Fabio over 2 years ago

you can see from that "> 169" on Z5, that your zones are not set according to your LTHR as found. So you probably clicked "accept" when the LTHR/TP were identified, but you did not go into your zones and do "Reset zones" which is needed.

0 Fabio over 2 years ago in reply to linsguilherme

Same for you - make sure to do LTHR test, make sure to set your MaxHR correctly (disable auto-update of max HR afterwards) and then **reset zones**

0 linsguilherme over 2 years ago in reply to Fabio

Well, you are right about I didn’t reset my zones.
But, I never did it in any other forerunner I had and the zones always updated accordingly.

Not a problem at all to do it, I just didn't know it was necessary.

0 Fabio over 2 years ago in reply to linsguilherme

I had the 945 for three years and did have to do it - so it's possible you forgot you had reset the zones at least once, the first time you did the LT test and got 188. But you hadn't yet for the 955 ;)

0 5646821 over 2 years ago in reply to Fabio

Finally someone that summarize this with one sentence... For me it is a major bug! forums.garmin.com/.../lthr-zones-are-calculated-by-changing-instead-of-base-lthr-number